Adaptable communications connectors

ABSTRACT

An apparatus for conveying signals between a communications card and a signal utilization device or network. In one form, structures are provided for receiving an RJ series plug and for making electrical connection with at the contacts on the plug and conveying any signals on the contacts to a communications device such as a telephone, facsimile machine, modem, or a local area network adapter. A body includes one or more recesses which receive the plug. An expandable and stretchable membrane isolates the contacts in the plug from electrical contact with an object in a surrounding environment such that passage of current from one or more of the electrical contacts to an object present in the surrounding environment is prevented. Also provided is a replaceable direct access arrangement which is replaceably held within the communications device. Both the structures providing the receptacles and the direct access arrangement are easily removable in case of damage or if other functions are desired. The replaceable direct access arrangement allows operation in countries having different telecommunications standards and allows operation with many different communications devices. Wireless communication is also provided.

RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.08/799,799 filed on Feb. 13, 1997 entitled Adaptable CommunicationsConnectors (now U.S. Pat. No. 5,773,332), which is a continuation ofU.S. patent application Ser. No. 08/402,084 filed on Mar. 10, 1995 (nowabandoned) entitled Adaptable Communications Connectors which is acontinuation-in-part of U.S. patent application Ser. No. 08/151,249filed on Nov. 12, 1993 (now U.S. Pat. No. 5,411,405) entitled MiniatureElectrical Communications Connectors.

BACKGROUND

1. The Field of the Invention

This invention relates to electronic communication devices. Moreparticularly, the present invention relates to connectors used to attacha communications line to a computer.

2. The Background Art

Telecommunications services have become an integral part of modernsociety. The number of telephones in the United States alone exceeds 150million. Moreover, communications within an organization between peopleand machines further increases the size of the communications network.The vast majority of the communications devices now in use require awired connection to a communications line. Such communications devicesinclude, for example, telephones, facsimile machines, modems, and localarea network (LAN) adapters. Wireless communications, however, arebecoming more commonplace in many instances.

In order to conveniently attach a communications line to acommunications device, standard connectors have been promulgated. Themost popular of these connectors is known in the art as the RJ-xx seriesof connectors. Of the RJ-xx series of connectors, the RJ-11, RJ-12, andRJ-45 connectors are widely used. The RJ-11 connector comprises a sixcontact plug and a corresponding jack which is standardized in theindustrialized world. The conventional six contact RJ-11 connector hasthe desirable attributes of having both low cost and high reliability.

The RJ-11 connector is commonly used to attach a communications devicesuch as a telephone, facsimile machine, or a modem (all of which may beintegrated into a single device) to a communications line. Such devicesare becoming smaller, so small that one or more dimensions of thecustomary RJ-11 jack, also referred to as a receptacle, is larger than acorresponding dimension of communications device. For example,communication devices which comply with the Personal Computer MemoryCard International Association (PCMCIA), also referred to as PC Card,standards have dimensions of about 2.1 inches by about 3.4 inches with athickness of only 3.5 mm, 5 mm, or 8 mm. Such small communicationsdevices cannot incorporate customary RJ-xx series receptacles but stillrequire compatibility with RJ-xx series plugs in order to attach to acommunications line.

U.S. Pat. No. 5,183,404 to Aldous provides several schemes for providinga miniature RJ-11 compatible receptacle. Disadvantageously, many of theschemes set forth in Aldous leave the electrical contacts exposed to thesurrounding environment. Thus, a user may come in contact with theelectrical contacts of the plug, which in the U.S. may carry more than80 volts. Further, since the contacts of the RJ-11 plug are exposed, thecontacts may be inadvertently shorted together. Thus, the schemeincluded in the Aldous reference presents a danger of electrical shockand electrical short circuit. Moreover, some of the receptacle schemesdisclosed in the Aldous reference are particularly prone to breakage anddamage because of inherently weak structures.

Thus, it would be an advance in the art to provide a miniaturizedcommunications line connector which overcomes these drawbacks.

BRIEF SUMMARY AND OBJECTS OF THE INVENTION

In view of the above described state of the art, the present inventionseeks to realize the following objects and advantages.

It is a primary object of the present invention to provide acommunications line receptacle for use with a miniaturizedcommunications device wherein the electrical contacts are shielded orisolated from the surrounding environment.

It is also an object of the present invention to provide a miniaturizedcommunications line connector which is resistant to breakage and whichcan be stored out of the way when not being used.

It is a further object of the present invention to provide acommunications line receptacle which is readily replaceable if broken.

It is another object of the present invention to provide acommunications card which can be readily adapted to meet variouscommunications standards.

It is a further object of the present invention to provide acommunications card which can provide wireless communications.

These and other objects and advantages of the invention will become morefully apparent from the description and claims which follow, or may belearned by the practice of the invention.

The present invention provides an apparatus for receiving an RJ-xxseries plug and making electrical connection with at least twoconductors on the plug and conveying any signals on the conductors to acommunications device such as a telephone, facsimile machine, modem,local area network adapter, or some other device.

The apparatus includes a body, also referred to as a body means. Arecess, or recess means, is provided on the body. In some embodimentsthe recess means preferably includes an open first end and a closedsecond end. In other embodiments, the recess means preferably includesopen first and second ends. The recess means preferably has dimensionssuch that the plug is closely received therein. A means is also providedfor releasably engaging the plug such that the plug is releasably heldin the recess.

At least first and second electrical conductors are provided in therecess. Each of the electrical conductors are positioned such that theyhave electrical continuity with the electrical contacts in the plug whenthe plug is received into the recess. A means for conveying anyelectrical signal present on the electrical contacts to thecommunications device is also provided.

A replaceable direct access arrangement unit allows the communicationscard to be interfaced with telephone systems, or other communicationssystems, which may each require adherence to a different standard. Whennecessary, a user merely replaces an existing direct access arrangementunit with another direct access arrangement unit which is compatiblewith the wired telephone system or the wireless communications systemthat is available to the user.

Also preferably included with the recess means is an expandable meansfor isolating the contacts in the plug from electrical continuity withan object in a surrounding environment such that passage of current fromone or more of the electrical contacts to an object present in thesurrounding environment is prevented. The expandable means is located atthe second end of the recess and is preferably a stretchable membrane.The expandable means expands to accommodate a plug received in therecess and tends to return, and can be returned by a user, to a positionwithin the thickness of the body when not being used so the apparatusassumes a compact configuration.

Embodiments of the present invention include receptacle modules whichreceive an RJ-xx series plug. One preferred embodiment of the presentinvention includes a means for holding the body which receives the RJ-xxseries plug. The means for holding the receptacle body or the receptaclemodule can be easily installed in and removed from the communicationsdevice by the user. The present invention allows the body to beretracted into and extended from the communications device while stillallowing easy removal and replacement of the body making up thereceptacle module. Another preferred embodiment of the present inventionincludes means for pivotally rotating the body into and out of thecommunications device such that the body is substantially entirelywithin the communications device when not being used and the body isrotated to a position where the recess which receives the plug isaccessible to the user when desired.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to better appreciate how the above-recited and other advantagesand objects of the invention are obtained, a more particular descriptionof the invention briefly described above will be rendered by referenceto specific embodiments thereof which are illustrated in the appendeddrawings. Understanding that these drawings depict only typicalembodiments of the invention and are not therefore to be consideredlimiting of its scope, the invention will be described and explainedwith additional specificity and detail through the use of theaccompanying drawings in which:

FIG. 1 is a partial perspective view of a lap top computer with acommunications card partially inserted therein and a first embodiment ofthe present invention ready to be coupled to the communications card.

FIG. 2 is a cross sectional view of the first embodiment of the presentinvention represented in FIG. 1.

FIG. 3 is a reverse perspective view of the first embodiment of thepresent invention represented in FIG. 1.

FIG. 4 is a perspective view of a second embodiment of the presentinvention with a receptacle module illustrated in a retracted position.

FIG. 5 is a perspective view of the second embodiment of the presentinvention represented in FIG. 4 illustrated in an extended position.

FIG. 6 is a perspective view of a third embodiment of the presentinvention with a removable receptacle module illustrated in a retractedposition.

FIG. 7 is a perspective view of the third embodiment of the presentinvention represented in FIG. 6 with the removable receptacle moduleillustrated in an extended position.

FIG. 8 is a top plan view of the removable receptacle module representedin FIG. 7.

FIG. 9 is a top plan view of the removable receptacle module representedin FIG. 6.

FIG. 10 is a perspective view of a fourth embodiment of the presentinvention with the receptacle module illustrated in a retractedposition.

FIG. 11 is a perspective view of the fourth embodiment of the presentinvention represented in FIG. 10 with the receptacle module illustratedin an extended position.

FIG. 12 is a perspective view of a fifth embodiment of the presentinvention.

FIG. 13 is a side elevational view of the fifth embodiment of thepresent invention represented in FIG. 12.

FIG. 14 is a perspective view of a sixth embodiment of the presentinvention having a replaceable direct access arrangement unit ready tobe inserted into the communications card.

FIG. 14A is an end view taken along line 14A--14A of FIG. 14.

FIG. 14B is a perspective view of the embodiment illustrated in FIG. 14showing the components retracted into the communications card.

FIGS. 14C-E are block diagrams illustrating the preferred functionscarried out by the replaceable direct access arrangement unit.

FIG. 14F is a top view of a communications card having anotherreplaceable direct access arrangement unit installed therein.

FIGS. 15A and 15B are top views showing the electrical interconnectionbetween the receptacle module and the replaceable direct accessarrangement (not shown in these figures) and the accompanying mechanismwhich retracts and extends the receptacle module into and out of thereplaceable direct access arrangement.

FIG. 15C is a detailed side view of the electrical interconnectioncircuit between the receptacle module and the frame.

FIG. 15D is a detailed perspective view of the electricalinterconnection circuit between the receptacle module and the frame.

FIGS. 16A, 16B and 16C are side views, and FIG. 16D is a top view, of amechanism which functions to retract and extend the receptacle moduleinto and out of the replaceable direct access arrangement.

FIGS. 17A and 17B are top views showing the electrical interconnectionbetween the receptacle module and the replaceable direct accessarrangement and the accompanying mechanism which retracts and extendsthe receptacle module into and out of the replaceable direct accessarrangement.

FIG. 17C is a detailed perspective view of the electricalinterconnection circuit between the receptacle module and the framerepresented in FIGS. 17A-B.

FIGS. 18A and 18B are top and side views, respectively, of a mechanismwhich functions to retract and extend the receptacle module into and outof the replaceable direct access arrangement.

FIGS. 19A-C are perspective views of three different antennaconfigurations which may be included in embodiments of the presentinvention.

FIG. 20 is a perspective view of an embodiment of the present inventionwhich is adapted for use with a portable cellular telephone.

FIG. 21 is a perspective view of a communications card in accordancewith the present invention having an RJ-xx series receptacle placeddirectly in the end thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Reference will now be made to the drawings wherein like structures willbe provided with like reference designations.

As is evident to those skilled in the art, advances in technology isallowing many different electrical devices to be made smaller than wascontemplated just a few years ago. Represented in FIG. 1 is a partialperspective view of a lap top computer 8. In order to meet the demandfor devices utilized with such lap top computers without adding anysignificant weight or bulk, devices such as a modem card 118 (shownpartially withdrawn from the lap top computer 8) which complies with thePCMCIA (also known as PC Card) standards have been produced.Significantly, while most lap top computers are generally note book size(about 8.5 inches by about 11 inches), the need for furtherminiaturization of devices such as the modem card 118 will increase ascomputing devices of all kinds continue to shrink.

The modem card 118 can also represent numerous other communicationdevices, for example, a local area network adaptor, voice mail device,or a facsimile device. Indeed, with the continuing trend ofminiaturizing such devices, all of these devices may be combined intoone card the size of the modem card 118 represented in FIG. 1. All ofthese devices are examples of those intended to come within the scope ofthe meaning of the term "communication devices" as used herein. Evenfurther, other devices which require communication with one or moreadditional devices which are now available or which may become availablein the future are intended to also come within the meaning of the termcommunication devices as used herein.

As used herein, the term "data utilization device" is intended toinclude all digital computing devices which are adaptable to receivedata or instructions via a communications medium. Perhaps the mostcommon current example of such a device is the personal computer.

A plug, which is compatible with the RJ-xx series industry standard, isindicated generally at 10 in FIGS. 1 and 3. The RJ plug 10 includes ablock 11 which has a first face 16 into which a plurality of electricalcontacts 20 are recessed. The electrical contacts 20 are connected towires (not represented) contained within a cable 14 which lead to thecommunications network, to another communications device, or otherdevice. A biased clip 12, which is integrally molded as part of theblock 11, is used to hold the plug in a corresponding receptacle.

Detailed information regarding the RJ-xx series of connectors can befound in the publication found at Title 47 (Telecommunications), Code ofFederal Regulations, Chapter I (Federal Communications Commission),Subchapter B (Common Carrier Services), Part 68 (Connection of TerminalEquipment to the Telephone Network), Subpart F (Connectors), Section68.500 (1992) which is now incorporated herein by reference in itsentirety.

FIGS. 1-3 represent a first preferred arrangement of the presentinvention embodied in a receptacle module generally represented at 100.The receptacle module 100 includes a male coupling 112 which providesboth physical and electrical connections to a corresponding femalecoupling 120 provided in the modem card 118. It will be appreciated thatmany different structures available in the industry provide equivalentfunctions to the male coupling 112 and the female coupling 120.

The receptacle module 100 includes a body 102 which can preferably befabricated from a plastic material using techniques known in the art butcan also be fabricated using any suitable materials and techniques nowavailable or which may become available in the future. Two recesses,both of which are generally indicated at 106 in FIG. 3, are formed inthe body 102. The inclusion of two recesses 106 desirably allowsaccommodation of two communication lines by the receptacle module 100.

A cross sectional view of one of the recesses 106 is provided in FIG. 2.FIG. 2 also shows the plug 10 inserted into the recess 106. The recess106 has a first open end and a second closed end. When an RJ-xx seriesplug is inserted into the recess 106, a plurality of conductors 108communicates with one of its respective contacts 20. The conductors 108are preferably spring-like so that they are in firm electricalcontinuity with the contacts 20. In some applications only twoconductors 108 are provided while more than two conductors 108 areprovided in other applications. Each of the conductors 108 is joined toa respective hollow pin, one of which is shown in cross section at 110,which mates with corresponding pins provided in the female coupling (120in FIG. 1).

It will be appreciated that the number of pins and conductors can bevaried in accordance with the particular application for the receptacleblock. Moreover, it is within the scope of the present invention toutilize any techniques now available, or which become available in thefuture, to provide electrical connection between the conductors in therecesses and the coupling structure.

Still referring to FIG. 2, as the plug 10 is received into the recess, aledge 104 provided on the biased clip 12 engages a ridge 18 formed onthe body 102 and protrudes into the recess 106. The biased clip 12 andthe ledge 104 cooperate to hold the plug 10 in the recess 106. Whenremoval of the plug 10 is desired, the biased clip 12 is compressed andthe plug 10 is removed from the recess 106.

Enclosing one end of the recess is an expandable member 114. In theembodiment of the invention represented in FIG. 2, the expandable memberis an elastic and stretchable membrane. The expandable member 114 ispreferably a rubber-like material which is an electrical insulator. Theexpandable member 114 is anchored in a groove 116 provided in the body102 around the recess 106.

As clearly shown in the cross section of FIG. 2, when the plug 10 isfully inserted into the recess 106 the expandable member 114 is moved toexpand the depth of the recess 106. The expandable member 114 isolatesthe contacts 20 from exposure to the surrounding environment. If theexpandable member 114 were not included, as in the previously availableschemes, the contacts 20 would be exposed to the surrounding environmentand the possibility that the contacts 20 will be shorted together ispresent. It is also possible that the contacts 20 could be shorted to anelectrical ground, pass a current to a user who touches the contacts 20,or some other event might occur which would damage the communicationsdevices attached to the cable 14. As known in the art, voltages of morethan 70 volts regularly are present on the contacts 20 when connected tothe common carrier telephone network in the United States.

The illustrated expandable member 114 is preferably fabricated from arubber-like material which is flexible enough to allow the end of theplug 10 to expand the flexible member 114 without undue force beingexerted on the plug 10. The material from which the expandable member114 is fabricated should be strong enough to allow long time use withoutany failure, e.g., tearing. Those skilled in the art will appreciatethat the perimeter of the expandable member 114 should be securelyanchored in the groove 116.

It is to be understood that structures other than the expandable member114 can function as the expandable means for isolating the contacts 20from electrical continuity with any object in the surroundingenvironment. For example, a combination of rigid panels joined togetherto allow expansion can function as the expandable means. Further, acombination of rigid elements and elastic elements, or one or more rigidelements which fold within the thickness of the body 102, can be devisedusing the information contained herein. It is preferred that thethickness of the body 102 be not greater than the thickness of the modemcard 118. Thus, the expandable member 114 should tend to automaticallyreturn to within the plane of the body 102 once the plug 10 is removedand/or allow the user to collapse the expandable member 114.

Referring to FIG. 3, it is preferred that the recesses 106 haveparticular dimensions. It is preferred that the two unbroken side wallsof the recess each have a length in the range from about 0.265 inches toabout 0.285 inches and the single remaining straight wall, which isperpendicular to the two side walls, have a dimension in the range fromabout 0.45 inches to about 0.475 inches for compatibility with RJ-45plugs. It is also preferred that the two unbroken side walls of therecess have a length in the range from about 0.265 inches to about 0.285inches and the single remaining straight wall, which is perpendicular tothe two side walls, have a dimension in the range from about 0.375inches to about 0.4 inches for compatibility with RJ-11 and RJ-12 plugs.

FIG. 4 is a perspective view of a second embodiment of the presentinvention with a receptacle module, generally represented at 131. Thereceptacle module 131 is illustrated in FIG. 4 as being retracted into acommunications card 130. The communications card 130 can house any ofthe communications devices indicated earlier.

The receptacle module 131 includes a body 132 and a finger pull 148formed thereon. The receptacle module 131 is conveniently kept in itsretracted position illustrated in FIG. 4 until the communications card130 needs to be connected to a communications line (not shown in FIG.4). When needed, the user grasps the finger pull 148 and pulls thereceptacle module 131 to its extended position represented in FIG. 5.

FIG. 5 illustrates the receptacle modules in its extended position. Thereceptacle module 131 includes a pair of ridges (one shown in phantomimage at 140 in FIGS. 4 and 5) which extend from the sides of thereceptacle module 131 and which slide along a pair of grooves, shownbest in phantom image in FIG. 5 at 138.

The receptacle module 131 includes two recesses, each generallyindicated at 134, with each recess including a plurality of conductors146. Each recess 134 also preferably includes an expandable member 144which can be identical, similar, or equivalent to the expandable member114 discussed in connection with FIGS. 1-3.

FIG. 6 is a perspective view of a third embodiment of the presentinvention including a removable receptacle module generally representedat 151. The removable receptacle module 151 is shown in place in acommunications card 150 as has been explained earlier. The removablereceptacle module includes a body 166 which is illustrated in FIG. 6 ina retracted position. It will be appreciated that the retracted positionillustrated in FIG. 6 can be used or the body 166 can be fully withdrawninto the communications card 150 housing. In order to use the apparatus,a user preferably grasps finger grips 166 and pulls the body 166 out toan extended position as represented in FIG. 7.

The removable receptacle module 151 is advantageously easily removablefrom the communications card 150. In order to remove the entireremovable receptacle module 151 from the communications card 150, a pairof wings 158 are squeezed inwardly so a ledge (158 in FIG. 8) providedon each wing 158 disengages from an edge 162 of the communications card150 housing. The entire removable receptacle module 151 can then beremoved from the communications card 150. It will be appreciated thatother structures can carry out the function of the wings 158, as will beexplained later in this disclosure.

It is common for a receptacle module, such as receptacle module 100, tobe broken or damaged during use. If a receptacle module, or otherstructure providing connection to a communications line is permanentlyaffixed to the communications card or its equivalent, then the onlypractical recourse is replacement of the entire communications card,even though only the receptacle module has been damaged. The embodimentof the present invention represented in FIGS. 6-9 provides that thereceptacle module can be easily replaced in case of damage.

Moreover, the removable receptacle module 151 can be replaced withanother removable receptacle module which is adapted to receive anothersize or style of plug (not represented in FIGS. 6-9). For example, theRJ-11, RJ-12, and RJ-45 connectors have all been generally adopted forspecialized applications. Thus, a removable receptacle module adaptedfor use with RJ-11 plugs can be easily replaced with a removablereceptacle module adapted for use with RJ-45 plugs and so forth.

FIGS. 8 and 9 provide detailed views of the removable receptacle module151 with the body 166 in an extended and retracted position,respectively. Provided in the body 166 are a pair of recesses, generallyindicated at 154, and a plurality of conductors 156. Each recess 154preferably includes an expandable member, generally indicated at 154, ashas been previously explained.

As represented in FIGS. 8 and 9, the removable receptacle module 151includes a shell or housing 168 from which the wings 158 extend and inwhich the body 166 slides. It will be appreciated that many differentstructures can be devised by those skilled in the art to carry out thefunctions of the shell using the teachings contained herein. Attached tothe body 166 are three guides 172 which slide within three respectivegrooves 170. The guides 172 and the grooves 172 are configured so thatthe body 166 is held captive in, i.e., cannot be completely removedfrom, the shell 168. Also represented in FIGS. 8 and 9 are a pluralityof electrical conductors indicated at brackets 174 which mate withsuitable structures within the communications card 150 housing 168 toallow transfer of signals between the communications line (notillustrated in FIGS. 8 and 9) and the communications card (150 in FIGS.6 and 7).

It will be appreciated that since the housing 168 of the receptaclemodule 151 is retained within the communications card 151, and that thecommunications card 150 is held within a lap top computer or a cabinetof some kind, the shell 168 is protected from breakage and damage so itcan be removed without undue difficulty even if damage does occur toother components of the removable receptacle module 151.

FIG. 10 provides a perspective view of a fourth embodiment of thepresent invention. The embodiment illustrated in FIG. 10 includes areceptacle module, generally indicated at 181, illustrated in aretracted position. The receptacle module 181 includes a body 184 whichis preferably semicircular in shape and rests, when in its retractedposition, within a cavity in a communications card 180, the cavity beinggenerally indicated at 182 in FIG. 11. The cavity 182 is preferablysemicircular in shape but can be any shape which provides sufficientroom to accommodate the body 184 in its retracted position.

The body 184 is attached to the communications card 180 housing by wayof a pivot 186. The pivot 186 allows the body 184 to be rotated bypulling on a finger grip 188 to an extended position as illustrated inFIG. 11. In its extended position, the receptacle module 181 allowsaccess to a recess 190 which is preferably configured as explainedearlier and is ready to receive a plug, such as plug 10 in FIG. 1.Electrical connections between the conductors (not illustrated) disposedin the recess 190 and the circuitry contained in the communications card190 are provided as can be designed by those skilled in the art. Thoseskilled in the art can also arrive at numerous structures which areequivalent to those illustrated in FIGS. 10 and 11 using the teachingscontained herein.

FIG. 12 provides a perspective view of a fifth embodiment of the presentinvention which includes a receptacle module, generally indicated at200, with male couplings 204 similar to those represented in FIGS. 1-3at 112 and which are received by a communications card such as thosedescribed earlier. A body 202 is provided with a recess into which theplug 10 is inserted. As illustrated best in the cross sectional view ofFIG. 13, a plurality of conductors 206 are provided which communicatewith respective contacts 20 on the plug 10.

With the plug 10 in position on the body 202, a lever 208 holds the plug10 in place. The lever 208 is biased toward the body 202 by a spring210. A ledge 212 provided on the lever 208 engages the ridge (18 inFIGS. 2 and 3) provided on the clip 12 to further hold the plug inplace. An aperture is provided on the lever 208 to accommodate a hump 22which is provided on plugs which comply with the RJ-xx series standards.It will be appreciated that the biased lever provides a much more secureand convenient to use apparatus than any of those available in the artwhich are suitable for use with RJ-xx series plugs and which is suitablefor use with miniaturized devices such as the previously describedcommunications cards.

Reference will next be made to FIG. 14. FIG. 14 provides a perspectiveview of a preferred sixth embodiment of the present invention. Theembodiment of FIG. 14 provides a communications card 250 which includesa replaceable direct access arrangement 258 which is shown ready to beinserted into the communications card 250. As is known in the industry,the communications card 250 makes electrical connection to a computingdevice via connector sockets, which are represented at 252 in FIG. 14.

The inclusion of a replaceable direct access arrangement, also referredto as a data access arrangement (abbreviated "DAA"), provides importantadvantages not previously available in the industry. In the past, DAAsprovided a few functions such as: matching the impedances between thetelephone line and the modem; receiving data from the telephone line;transmitting data onto the telephone line; providing a pulse dial; anddetecting an incoming ring signal. Significantly, different countriesand regions of the world require that the DAA carry out differentfunctions.

Presently, it has become a practice in the industry to supply a DAA witha modem in accordance with whatever country the user intends to make theconnection to a telephone line, i.e., "U.S." modems are sold in the U.S.and "German" modems are sold in Germany. Since desktop personalcomputers are very seldom moved from country to country, it has beensatisfactory in the past to purchase a modem which can be used in onlyone country; if the user moved, a new modem was purchased if necessary.

Significantly, the widespread popularity of portable personal computers,and the use of PCMCIA cards in desktop computers, has meant that thecomputer or the computer peripheral is not bound to any particularlocation but can travel to any location in the world. Unfortunately, theindustry has not recognized, and has not begun to effectively solve, theproblems faced by a portable computer user traveling from country tocountry. Available telephone communication devices are ill suited foruse in one or more countries which a user might visit. Even if thedesirability of providing a telephone communication device and DAA whichis suitable for use in multiple countries was recognized in theindustry, the requirements of some countries mandate the use ofcomponents which seem too large to allow their incorporation into acommunications card which is used with a portable computer.

The present invention solves these problems found in the industry byincluding a replaceable DAA 258 which is received into a cavity which isgenerally indicated at 254 in FIG. 14. The replaceable DAA 258 not onlycan carry out the customary functions already known in the art, but inaccordance with the present invention the replaceable DAA 258 can alsocarry out other desirable functions as described herein.

The replaceable DAA 258 preferably makes electrical connection with thecommunications card 250 via twenty connector pins 256 provided in theback of the cavity 254 and corresponding connector sockets 260 providedon the rear of the DAA 258. As necessary, a user can install anappropriate replaceable DAA 258 to perform the functions necessary toobtain direct connection to a country's telephone system or to performsome other function.

It will be appreciated, and as will be explained shortly, thereplaceable DAA 258 can house components different than those necessaryto connect to a telephone line such as providing the componentsnecessary to interface with a computer network or provide wirelesscommunication service such as cellular telephone service or carry outsome other function.

Represented in FIG. 14 are grooves 255 into which are receivedrespective ridges 262 provided on the sides of the replaceable DAA 258.The grooves 255 are more clearly represented in the end view of FIG.14A. The grooves 255 and the ridges 262 function to guide thereplaceable DAA 258 into and out of the cavity 254. The replaceable DAA258 is preferably held in the cavity 254 by a pair of flexible ledges264 which engage corresponding notches 257 provided on the inner surfaceof the cavity 254. FIG. 14B illustrates the communications card 250 whenthe replaceable DAA 258 is fully inserted into the cavity 254.

To remove the replaceable DAA 258 from the remainder of thecommunications card 250, a pair of tabs 266 are squeezed, resulting inthe ledges 264 being released from the notches 257, and allowing thereplaceable DAA 258 to be extracted from the cavity 254. It will beappreciated that many different arrangements can be arrived at by thoseskilled in the art to allow the components of the replaceable DAA 258 tobe connected to, and removed from, the remainder of the communicationscard 250.

The replaceable DAA 258 illustrated in FIG. 14 is provided with areceptacle module 270 which is provided with a pair of RJ-xx seriesreceptacles represented at 278A&B which are adapted to connect to acommunications line having a RJ-xx series plug such as those representedin FIGS. 1-3. It will be appreciated that the RJ-xx series receptacles278A&B can be provided with the expandable member 114 shown in FIG. 2 ifdesired. It is within the scope of the present invention to provide thereceptacle module 270 with structures to allow its removal as shown inFIG. 1 or to include structures to allow extension out of, as shown bythe phantom image of FIG. 14, the replaceable DAA 258 and retractioninto the replaceable DAA 258 in the direction of arrow 272 asrepresented in FIG. 14B.

FIGS. 14C-E are high level block diagrams illustrating some of thepreferred functions carried out by the replaceable DAA 258. As suggestedabove, a number of different replaceable DAA 258 units can be provided,each being adapted to carry out a particular function and the userchanging the replaceable DAA 258 as necessary. Provided below in TablesA-C C are descriptions of the preferred functions carried out by theblocks represented in FIGS. 14C-E, respectively.

                  TABLE A                                                         ______________________________________                                        FIG. 14C                                                                      US DAA                                                                        ______________________________________                                        274A             Modem connection                                             274B             Hybrid circuit                                               274C             AC impedance network                                         274D             Signal transducer                                            274E             Line connector                                               274F             Transient protection                                         274G             Loop relay                                                   274H             DC holding current                                           274I             Ring detect circuit                                          ______________________________________                                    

                  TABLE B                                                         ______________________________________                                        FIG. 14D                                                                      Norway DAA                                                                    ______________________________________                                        275A             Modem connection                                             275B             Hybrid circuit                                               275C             AC impedance network                                         275D             Signal transducer                                            275E             Loop relays                                                  275F             Transient protection                                         275G             Line connector                                               275H             Pulse dial                                                   275I             DC holding current                                           275J             Ring detect                                                  ______________________________________                                    

                  TABLE C                                                         ______________________________________                                        FIG. 14E                                                                      German DAA                                                                    ______________________________________                                        276A             Modem connection                                             276B             Hybrid circuit                                               276C             AC impudence network                                         276D             Signal transducer                                            276E             Loop relays                                                  276F             Transient protection                                         276G             Line connector                                               276H             Billing tone filter                                          276I             Pulse dial                                                   276J             DC holding current                                           276K             Ring detect                                                  ______________________________________                                    

FIG. 14F shows a receptacle module 270A which includes only a singleRJ-xx series receptacle. Some country's regulations require that only asingle telephone line be connected to a telecommunications device. TheRJ-xx series receptacle illustrated in FIG. 14F is preferably an eightconductor RJ-45 receptacle. The DAA to which the receptacle module 270Ais connected preferably provides the interfacing functions needed todirectly attach to the telephone system of the particular country orcountries.

Reference will next be made to FIGS. 15A-D which are detailed views ofthe receptacle module 270 and the structures which allow the receptaclemodule 270 to extend out of or retract into the replaceable DAA 258(shown in FIG. 14). It will be appreciated that the structures whichallow extension and retraction of the receptacle module 270 can beincorporated into the replaceable DAA 258, directly into acommunications card 250, or into any other device which would benefitfrom the compact communications connector described herein.

Prior to the present invention, if the structures providing RJ-xx seriesconnectors were affixed to the PCMCIA communications card, theconnectors would be broken off or damaged and the user would be requiredto discard the entire communications card and would be stranded with aninoperative communications card. The devices described in U.S. Pat. No.5,183,404 to Aldous are particularly afflicted by this problem. Prior tothe advent of the instant invention, the industry had not recognized thedescribed incidents as a significant problem and the industry has notbeen able to arrive at the solution described herein.

The present invention allows the structures which provide thecommunications receptacles to be readily replaced by the user. The usermay need to replace the structures which provide the communicationsreceptacles due to damage or in order to interface with differentcommunications lines or devices. The present invention provides theseadvantages which have not otherwise been available in the industry.Thus, the user can replace damaged receptacle structures, or replace thestructure if other functions are necessary, quickly and without anydifficulty.

Represented in FIGS. 15A and 15B is a receptacle module 270 whichincludes two RJ-xx series receptacles, generally represented at 278 A&B.FIG. 15A shows the receptacle module 270 in its retracted position. FIG.15B shows the receptacle module 270 in its extended position. Each ofthe RJ-xx series receptacles 278A&B is provided with four conductorsrepresented at bracket 284. It will be understood that therepresentation of the RJ-xx series receptacles described herein isexemplary of one presently preferred application with inclusion of othertypes of connectors and devices also being within the scope of thepresent invention.

A frame 280 is shown in FIGS. 15A&B. The frame 280 is, for example,received into a cavity (not represented in FIGS. 15A&B) provided in thereplaceable DAA 258 and is held in place by locking ridges 290 whichengage notches 273 (FIG. 14). An electrical connector represented at 282in FIGS. 15A-B provides electrical connection and provides furtherphysical stability and can be selected by those skilled in the art usingthe information provided herein. The frame 280 is removed from thereplaceable DAA 258 by the user squeezing together tabs 292 and theframe 280 being pulled from the replaceable DAA 258. It will beappreciated that the structures represented in FIGS. 15A&B can beincorporated into many different devices which are now available in theindustry or which may become available in the future.

As represented in FIGS. 15A&B, the receptacle module 270 is biased inits extended position by springs 286. The springs 286 are held in placeby posts 286A and 286B. A flexible interconnecting circuit 288 provideselectrical connection between the connector 282 and the conductors 284.Further information regarding the interconnecting circuit 288 will beprovided in connection with FIGS. 15C&D. As will be appreciated by thoseskilled in the art, the structures described herein provide theadvantage of being more compact than previously possible followingconventional teachings in the art.

FIGS. 15C&D show a flexible interconnecting circuit 288 which provides aplurality of conductors indicated at 288A. The flexible interconnectingcircuit 288, rather than utilizing pin and socket terminal connections,relies on surface mount connections thus making the structures morecompact. The electrical signals received at the connector 282 (FIGS.15A&B) are conveyed to conductors (not illustrated) formed on thesurface of a bar 289 and a holding clip 291 presses the conductors 288Aonto the appropriate conductors formed on the surface of the bar 289.The flexible interconnecting circuit 288 bends as necessary toaccommodate the extension and retraction of the receptacle module 270.

To make a surface electrical connection with the conductors of the RJ-xxseries receptacles, the conductors 271 being held in place by a member271, the flexible interconnecting circuit 288 is folded so that theconductors 288A are pressed against a corresponding conductorrepresented at 284. The flexible interconnecting circuit 288 is held inplace on the member 271 by a clip 277. The receptacle module 270 canprovide electrical interconnection between the conductors 284 of theRJ-xx series receptacles 278A&B. Using the described structure, areliable and compact arrangement is provided to make electricalconnection with the RJ-xx series receptacles.

Referring again to FIGS. 15A&B, a pair of flexible arms 279 are eachprovided with a protruding knob 281 which is received into a grooveformed in the inner surface of the frame which allows the receptaclemodule 270 to slide within the frame 280 and hold the receptacle module270 in either its extended or retracted position. Projecting from theside of the receptacle module 270 are wings 282 which provide furtherpositional stability. The leading edge 282A of the wings 282 abuts astop 283 on the frame to limit the extension motion of the receptaclemodule 270. The operation of the flexible arms 279 in the retraction andextension movement will be explained in further detail by reference toFIGS. 16A-D.

FIG. 16A is a side view of the inner surface of the frame 280 showing agroove 306 formed therein and the receptacle module 270 in its retractedposition. As can be seen in FIG. 16A, the knob 281 is held in a trough306A. The shape of the knob 281 and the shape of the trough 306A,together with the biasing action of the springs (286 in FIGS. 15A&B),keep the knob 281 in the trough 306A. When extension of the receptaclemodule (270 in FIGS. 15A&B) is desired, the user pushes in on thereceptacle module 270 so that the sloping rear side of the knob 281causes the free end of the flexible arm 279 to bend upward allowing theknob 281 to escape the trough 306A and move forward in the groove 306 tothe extended position represented in FIG. 16B.

FIG. 16C provides a side view of the flexible arm 279 showing itsvertical movement as represented by arrow 308. FIG. 16D provides a topview of a portion of the receptacle module 270 further showing the shapeof the knob 281 and the horizontal movement of the flexible arm 279. Itwill be appreciated that the described structures provide a simple andreliable arrangement for extending and retracting the receptacle module270 and which advantageously is more compact than previously availablestructures. By making the retraction and extension structures morecompact, more room is provided for other components.

Reference will next be made to FIGS. 17A-C which illustrate in detailadditional structures which allow the receptacle module 270 to extendout of or retract into the replaceable DAA 258 (shown in FIG. 14) andthe electrical interconnection between the connector 287 and theconductors 284 in the RJ-xx series receptacles. Many of the structuresrepresented in FIGS. 17A&B are the same as the correspondingly numberedstructures represented in FIGS. 15A&B. Thus, only the differencesbetween the represented structures will be described.

Represented in FIGS. 17A&B is one of at least two exposed conductorsrepresented at 294A which is attached to the inner surface of frame 280.FIG. 17C shows two sliding electrical contacts 296A and 296B. Thesliding electrical contacts 296A&B are preferably of the spring type toensure that each of the sliding electrical contacts 296A&B makes solidelectrical contact to each of the respective conductors, one of which isrepresented at 294A in the top views of FIGS. 17A&B. An electricalconnection is made from the sliding electrical contacts 296A&B, throughthe receptacle module 270, and to the appropriate conductor 284. It willbe understood that many variations on the electrical interconnectionstructures can be carried out within the scope of the present inventionusing the information set forth herein.

FIGS. 18A&B will be referred to next to describe the structures whichallow the receptacle module 270 to extend and retract. FIG. 18A is across sectional top view of the receptacle module 270 showing a grooveformed therein. Still referring to FIG. 18A, provided on the innersurface of the stop 283 is a pin 301 which is held in a recess 304 andbiased outwardly from the recess 304 by a spring 302. In FIG. 18A, thesolid image of the stop 283 and the pin 301 shows their position in thegroove 300 when the receptacle module 270 is in its extended position.The biasing force of the spring 286, partially represented in FIGS.18A&B, holds the receptacle module 270 in its extended position.

Reference will now be made to both FIGS. 18A and 18B to explain themovement of the receptacle module 270 from its extended position to itsretracted position. When the receptacle module 270 is to be moved to itsretracted position, the user (not represented in the figures), pushesthe receptacle module 270 toward the frame 280. The pin 301 travels inthe groove 300 up the ramp 300A and into the well 300B where the pin 301is held. The retracted position of the receptacle module 270 isrepresented by the phantom image in FIG. 18A. To move the receptaclemodule 270 from its retracted position to its extended position, theuser again pushes the receptacle module 270 inward toward the frame 280which causes the pin 301 to move out of the well 300B up a rampindicated by arrow 300C. The user then releases the receptacle module270 which allows the receptacle module 270 to extend and the pin 301 totravel down a ramp indicated by arrow 300D where the pin 301 againenters groove 300 and the receptacle module 270 completes its extension.

Reference will next be made to FIGS. 19A-C. In order to accommodatewireless communication between the communications card and a wirelesscommunication system, an antenna is provided on the communications cardsrepresented in FIGS. 19A-C. The embodiments of the present inventionillustrated in FIGS. 19A-C are particularly adapted for accommodatingcellular telephone signals but those skilled in the art can readilyadapt the embodiments to accommodate other communication systems,including those utilizing radio frequency techniques as well as othermediums.

FIG. 19A illustrates an antenna 312 which pivots into and out of the endof the communications card 250 in the directions of arrow 312A. When useof the antenna is desired, the user depresses a release button 315 whichallows the antenna to pivot out of the end of the communications card.

FIG. 19B illustrates an antenna 318 which is pivotally mounted on aretractable block 314. When use of the antenna is desired, the userdepresses a release button 315 which allows the antenna 318 to pivot inthe directions of arrow 318A. The retractable block 314 can be storedwithin the communications card and extended and retracted in thedirections of arrow 314A and released from its retracted position bydepressing button 316.

FIG. 19C illustrates an antenna 322 which is pivotally mounted on aretractable block 320. The retractable block 320 is extended bydepression of button 316. When the retractable block 320 is extended,the antenna 322 is pivoted up or down in the direction of arrow 322A.Also provided on the retractable block 320 is a receptacle 324 allowinga communications line to also be attached thereto.

Each of the arrangements represented in FIGS. 19A-C can be best adaptedfor use with particular types of antenna which may assume shapes andsizes very different than the illustrated antennas. For example,antennas which are vertically polarized, horizontally polarized, orcircularly polarized can have application with the embodiments of thepresent invention. Moreover, the antennas used with the embodimentsillustrated in FIGS. 19A-C can include components which extend orfurther pivot to increase the length of, or change the shape of, theantenna. Those skilled in the art will appreciate that the componentsnecessary to carry out wireless communication, such as cellulartelephone communication, can be packaged in the communications card 250or in a DAA adapted for such purpose. Further information regardingwireless computer networks can be obtained from IEEE 802.11 Standard(and any available drafts thereof) which is now incorporated herein byreference in its entirety.

Reference will next be made to FIG. 20 which shows a communication card250 and a replaceable DAA 332 which are adapted to interface with aportable cellular telephone via a cable 334 and a connector 336 whichattaches directly to a corresponding connector (not illustrated) on theportable cellular telephone (not illustrated). It will be appreciatedthat those skilled in the art will be able to provide replaceable DAAs332 and connectors 336 which are adapted to function with any number ofcellular telephones or other communications devices and which allow theuser to easily and quickly change the application to which thecommunications card is put.

Reference will next be made to FIG. 21. FIG. 21 provides a perspectiveview of a communications card generally designated 340. Thecommunications card 340 follows the PCMCIA (also referred to as PC Card)Type III standard for dimensions and configuration. The height of aPCMCIA Type III card is still not great enough to allow a standard RJ-xxseries receptacles to be mounted therein. As can be seen in the figures,and particularly in FIG. 21, the PMCIA Type III PC card 340 includes anupper surface 350 and a lower surface 352 which form a portion of thehousing for the communication card 340. In the communications card 340illustrated in FIG. 21, a T-shaped cutout 328 is removed from thehousing of the communications card 340. The T-shaped cutout 328accommodates the biased clip 12 and the ridge 18 present on the plug 10.The shape of the T-shaped cutout 328 engages the biased clip 12 and theridge 18 to hold the plug 10 in place. Represented in FIG. 21 are tworeceptacles, each generally designated at 326. Preferably, one of thereceptacles 326 is an eight conductor RJ-45 receptacle, which is calledfor in some computer network standards, and the other of the receptacles326 is an RJ-11 receptacle.

In view of the foregoing, it will be appreciated that the presentinvention provides a communications line receptacle for use with aminiaturized communications device wherein the electrical contacts areshielded from the surrounding environment and which is resistant tobreakage and which can be moved out of the way when not being used. Thepresent invention also provides a communications line receptacle whichis easily replaceable if broken. The present invention also provides acommunications card which can be readily adapted to meet variouscommunications standards and which can provide wireless communications.

The present invention may be embodied in other specific forms withoutdeparting from its spirit or essential characteristics. The describedembodiments are to be considered in all respects only as illustrativeand not restrictive. The scope of the invention is, therefore, indicatedby the appended claims rather than by the foregoing description. Allchanges which come within the meaning and range of equivalency of theclaims are to be embraced within their scope.

What is claimed and desired to be secured by United States LettersPatent is:
 1. An apparatus for receiving a plug having a biased clip andfor making electrical connection with at least first and secondelectrical contacts provided on the plug, the apparatus comprising:acommunications device, the communications device having a first sidewith a dimension which complies with PCMCIA Type III card standards;body means, the body means including at least one recess means providedin the body means, the recess means having dimensions such that the plugis closely received therein; housing means for releasably holding thebody; means for removably holding the housing means substantially withinthe communications device such that the housing means and the body meanscan be removed from and inserted into the communications device as aunitary module; a first electrical conductor provided in the recessmeans, the first electrical conductor being positioned such that itmakes electrical continuity with the first electrical contact in theplug when the plug is received by the recess means; a second electricalconductor provided in the recess means, the second electrical conductorbeing positioned such that it makes electrical continuity with thesecond electrical contact in the plug when the plug is received by therecess means; and means for conveying any electrical signal present onthe first and second electrical contacts to the communications device.2. An apparatus as defined in claim 1 wherein the housing meanscomprises a direct access arrangement.
 3. An apparatus as defined inclaim 2 wherein the direct access arrangement comprises a billing tonefilter.
 4. An apparatus as defined in claim 1 wherein the recess meanscomprises at least one RJ-xx series receptacle.
 5. An apparatus asdefined in claim 1 further comprising means for extending and retractingthe body means into and out of the housing means.
 6. An apparatus asdefined in claim 5 wherein the means for extending and retracting thebody means further comprises means for holding the body means in anextended position.
 7. An apparatus as defined in claim 5 furthercomprising means for removing the body means from the housing means. 8.An apparatus as defined in claim 1 wherein the recess means isconfigured to closely receive an RJ-11 plug having a biased clip.
 9. Anapparatus as defined in claim 1 wherein the recess means is configuredto closely revceive an RJ-12 plug having a biased clip.
 10. An apparatusas defined in claim 1 wherein the recess means is configured to closelyreceive an RJ-45 type plug having a biased clip.
 11. An apparatus asdefined in claim 1 wherein the body means comprises a first side and asecond side and wherein the recess comprises a rectangular recess havingthree walls, the walls being oriented substantially perpendicularly tothe first side.
 12. An apparatus as defined in claim 11 wherein thethree walls comprise a first pair of parallel opposing walls each havinga length in the range from about 0.265 inches to about 0.285 inches andthe third wall has a length in the range from about 0.45 inches to about0.475 inches.
 13. An apparatus as defined in claim 11 wherein the threewalls comprise a first pair of parallel opposing walls each having alength in the range from about 0.265 inches to about 0.285 inches andthe third wall has a length in the range from about 0.375 inches toabout 0.4 inches.
 14. An apparatus as defined in claim 1 furthercomprising means for releasably engaging the biased clip on the plug.15. An apparatus as defined in claim 1 wherein the housing meanscomprises a shell having a plurality of grooves and wherein the bodymeans further comprises guides slidably mounted within the grooves. 16.A communications device, the communications device having a first sidewith a dimension which complies with PCMCIA Type III card standards, thecommunications device comprising:data access means for interfacingcommunications signals received and generated by the communicationsdevice; means for removably holding the data access means substantiallywithin the communications device such that the data access means can beremoved from and inserted into the communications device as a unitarymodule; and means for conveying a communications signal between the dataaccess means and a signal utilizing device.
 17. A communications deviceas defined in claim 16 wherein the means for conveying a communicationssignal comprises:body means, the body means including at least onerecess means provided in the body means, the recess means havingdimensions such that a plug having first and second electrical contactsis closely received therein; a first electrical conductor provided inthe recess means, the first electrical conductor being positioned suchthat it makes electrical continuity with the first electrical contact inthe plug when the plug is received by the recess means; a secondelectrical conductor provided in the recess means, the second electricalconductor being positioned such that it makes electrical continuity withthe second electrical contact in the plug when the plug is received bythe recess means; and means for conveying any electrical signal presenton the first and second electrical contacts to the communicationsdevice.
 18. A communications device as defined in claim 16 wherein themeans for conveying a communications signal comprises an antenna.
 19. Acommunications device as defined in claim 16 wherein the means forconveying a communications signal comprises:a cord; and means forconnecting the cord to a portable telephone.
 20. A communications cardfor use in a data utilization device and for receiving an RJ-xx seriesplug having a biased clip and for making electrical connection with atleast first and second electrical contacts provided on the plug, thecommunications card complying with PCMCIA Type III card standards andcomprising:a first surface; a second surface, the second surface beingsubstantially parallel to the first surface and forming upper and lowersurfaces of the communications card; a first end; recess means providedin the first end, the recess means being oriented substantiallyperpendicular to said first end and substantially parallel to the uppersurface and the lower surface, the recess means having dimensions suchthat the plug is closely received therein; a first electrical conductorprovided in the recess means, the first electrical conductor beingpositioned such that it makes electrical continuity with a firstelectrical contact in the plug when the plug is received by the recessmeans; a second electrical conductor provided in the recess means, thesecond electrical conductor being positioned such that it makeselectrical continuity with a second electrical contact in the plug whenthe plug is received by the recess means; means for conveying anyelectrical signal present on the first and second electrical contacts tothe communications device; and a cutout formed on the first surfaceadjacent to the recess means, the cutout shaped to receive the biasedclip.